Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
“Most deserts are hot, but not all. Antarctica is considered a desert because it receives very little precipitation, even though it is covered in ice.” What makes a place a desert, according to the passage?
“Critics called the plan reckless, but the mayor pointed to three nearby cities where the same plan had cut traffic by a fifth.” How does the mayor support the plan?
Di sebuah tingkat hospital, nisbah jururawat kepada pembantu jururawat ialah 7 : 9. Terdapat 84 jururawat. Berapa ramai pembantu jururawat x yang ada?
Sebuah silinder mempunyai jejari 6 m dan tinggi 18 m. Dengan π ≈ 3.14, cari isi padunya V.
Tulang karpal manakah yang paling kerap patah, lazimnya selepas jatuh dengan tangan terbentang?
Lesi pada trak optik kiri menyebabkan kecacatan medan visual yang mana?
Hormon manakah yang menyebabkan pundi hempedu mengecut selepas hidangan berlemak?
Kajian klasik Hodgkin dan Huxley tentang asas ion potensi tindakan menggunakan sediaan yang mana?
What is a prion?
A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?
During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?
Olive oil is liquid at room temperature, while butter is solid. Which explanation is correct?
Choose the correct word: “In your paper, you must ___ your sources.”
Which sentence uses “whoever” or “whomever” correctly?
Choose the meaning of the word in bold: “The doctor will discontinue the drug if the rash spreads.”
Choose the meaning of the word in bold: “The child had a paroxysmal cough.”
Jawapan: B · Very little precipitation
The passage says Antarctica is a desert because it gets very little precipitation, showing that low rainfall or snowfall, not heat, defines a desert.
Jawapan: B · By giving examples of where the plan has worked
The mayor uses evidence from other cities where the plan reduced traffic.
Jawapan: x = 108
Nisbah dan kadaran: nisbah a : b membandingkan dua kuantiti. Dalam kadaran dua nisbah adalah sama, a/b = c/d, dan anda menyelesaikannya dengan darab silang: a·d = b·c. Untuk berkongsi suatu jumlah dalam nisbah m : n, bahagikannya kepada m + n bahagian yang sama; satu bahagian ialah m bahagian, yang satu lagi n bahagian.
Jawapan: V = 2035 m³
Perimeter, luas dan isi padu: perimeter ialah jarak mengelilingi sesuatu bentuk (segi empat tepat: 2l + 2w). Luas diukur dalam unit persegi: segi empat tepat l × w, segi tiga ½ × tapak × tinggi, bulatan π·r². Lilitan bulatan ialah π·d = 2π·r. Isi padu dalam unit padu: kuboid l × w × h, silinder π·r²·h. Gunakan nilai π yang diberikan oleh soalan.
Jawapan: D · Skafoid
Skafoid ialah tulang karpal yang paling kerap patah. Rasa sakit pada tekanan di "snuffbox" anatomi ialah tanda klinikal utama.
Jawapan: C · Hemianopia homonim kanan
Trak optik kiri membawa gentian daripada separuh kiri setiap retina, yang melihat medan visual kanan. Lesinya menyebabkan kehilangan separuh kanan medan pada kedua-dua mata.
Jawapan: A · Kolesistokinin (CCK)
Lemak dan protein dalam duodenum membebaskan CCK, yang mengecutkan pundi hempedu dan merangsang rembesan enzim pankreas.
Jawapan: B · Akson gergasi sotong
Akson gergasi sotong selebar sehingga kira-kira 1 mm, maka elektrod pengapit voltan boleh dimasukkan. Ini menunjukkan bahawa aliran masuk natrium dan aliran keluar kalium menghasilkan potensi tindakan.
Jawapan: D · A misfolded protein that causes normal proteins to misfold
Prions are infectious proteins with an abnormal shape. They convert normal proteins into the misfolded form and cause brain diseases such as Creutzfeldt–Jakob disease. They are very resistant to normal sterilisation.
Jawapan: D · Protists
A nucleus rules out bacteria. No cell wall rules out fungi and plants. Single-celled eukaryotes such as Paramecium, which swims with cilia, are classed as protists.
Jawapan: B · Hydrolysis
Hydrolysis uses water to break the bonds between monomers, as when enzymes break starch into glucose or proteins into amino acids. It is the reverse of condensation.
Jawapan: A · Olive oil has more C=C double bonds, which kink the chains so they cannot pack closely
Unsaturated fatty acids have C=C double bonds that put bends in the chains. Bent chains cannot pack tightly, so the attractions between them are weaker and the fat melts at a lower temperature.
Jawapan: D · cite
“Cite” means to quote or name a source. A “site” is a location, and “sight” is the ability to see.
Jawapan: B · Whoever arrives first should unlock the door.
“Whoever” is the subject of the clause “whoever arrives first”. “Whomever” is the object form.
Jawapan: A · Stop
To discontinue is to stop doing or giving something.
Jawapan: A · Occurring in sudden attacks
Paroxysmal means occurring in sudden, intense episodes, like the coughing fits of whooping cough.
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